Class Reptilia Subclass Synapsida Order Pelycosauria Ophiacodon

1
Class Reptilia Subclass Synapsida Order
Pelycosauria Ophiacodon
-early synapsid (mammal-like reptile) -12 ft
long -primitive pelycosaur
2
Evolution of the Synapsid Line
Cynodont therapsid
advanced pelycosaur
Primitive pelycosaur
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Class Reptilia Subclass Synapsida Order
Therapsida
Cynodont therapsid
-gave rise to Class Mammalia -numerous character
transformations
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Class Mammalia Subclass Prototheria Order
Monotremata
Extant Monotremes
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Class Mammalia Subclass Prototheria Order
Monotremata
Duck-billed platypus (Ornithorhyncus)
6
Class Mammalia Subclass Prototheria Order
Monotremata
Platypus (Ornithorhyncus)
7
Class Mammalia Subclass Prototheria Order
Monotremata
Echidna (Tachiglossus)
8
Class Mammalia Subclass Prototheria Order
Monotremata
Echidna (Zaglossus)
9
Class Mammalia Subclass Theria Infraclass
Metatheria
Marsupials
10
Class Mammalia Subclass Theria Infraclass
Metatheria
Tasmanian devil
11
Class Mammalia Subclass Theria Infraclass
Metatheria
Kangaroo
12
Class Mammalia Subclass Theria Infraclass
Eutheria
Placental Mammals
13
Class Mammalia Subclass Theria Infraclass
Eutheria
Tree shrew (Tupaia) (resembles ancestral primate
condition)
14
Class Mammalia Subclass Theria Infraclass
Eutheria
Lemur (primitive primate)
15
Class Mammalia Subclass Theria Infraclass
Eutheria
Tarsier (living analogy of a slightly later stage
in primate evolution)
16
Class Mammalia Subclass Theria Infraclass
Eutheria
New World Monkey (Platyrrhine) (spider monkey)
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Class Mammalia Subclass Theria Infraclass
Eutheria
Old World Monkey (Catyrrhine)
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Class Mammalia Subclass Theria Infraclass
Eutheria
Australopithicine
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K. Animalia P. Chordata C. Mammalia
O. Carnivora (hyenas, lions)
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Class Mammalia Subclass Theria Infraclass
Eutheria
O. Hyracoidea (hyrax, coney)
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Class Mammalia Subclass Theria Infraclass
Eutheria
O. Edentata (Xenarthra) (armadillo)
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Class Mammalia Subclass Theria Infraclass
Eutheria
O. Pholidota (pangolin, scaly anteater)
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Asiatic pangolin, or scaly anteater
Class Mammalia Subclass Theria Infraclass
Eutheria Order Pholidota
24
Class Mammalia Subclass Theria Infraclass
Eutheria
O. Dermoptera (flying lemur)
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Class Mammalia Subclass Theria Infraclass
Eutheria
O. Dermoptera (flying lemur)
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Class Mammalia Subclass Theria Infraclass
Eutheria
O. Tubulidentata (aardvark)